There is no greater motivating force in the world than Love, because God is Love; and without this Love constraining us, the measure of faith given each of us will not work, and the Lord will be robbed of pleasure (Heb.11:6).
The world in its frenzy to establish unity amongst individuals and nations, which at best is woefully fragmented, needs to see the Unity of the Spirit in the One New Man in practical and yet radical ways.
Learning to sit in silence before Him and listen for His Voice not only protects us from getting personally derailed, hijacked and ultimately defeated by obeying "strangers' voices", but it also develops intercession for others.
God can be absolutely relied upon AT ALL TIMES to make ALL Grace abound towards us ALWAYS, in EVERY situation and under EVERY circumstance; and He is glorified in our RECEIVING ABUNDANTLY of this endless, never-deserved GRACE!
The elder brother could not share in his father's deep relief and joy, because although he had done all that was right in his father's eyes, he had not done so with a perfect heart, in response to his father's heart of love.